What should you pay attention to before liquid mold silicone rubber operation?

Liquid mold silicone rubber, as the name suggests, is a raw material used to make molds. What details should be paid attention to before operating liquid mold silicone rubber. Or what measures need to be taken to improve the service life of the silicone mold after vulcanization, ensure performance and avoid operation failure.

1. Before using and operating liquid mold silicone rubber, it is necessary to choose the mold silicone rubber with the appropriate corresponding hardness for use. Because there are differences in the hardness of the mold silicone rubber for different purposes, the silicone molds made will of course have differences, so in terms of use There is a distinction.

2. Liquid mold silicone rubber must be carried out with tools during operation. At this time, the tools that are in direct contact with the mold silicone should be clean and must not contain impurities to prevent impurities from affecting the silicone vulcanization effect, especially for addition molding silicone.

3. Air bubbles will be generated in the liquid mold silicone rubber. If the bubbles cannot be eliminated, the silicone mold will also contain pores after vulcanization, which will greatly affect the service life of the silicone mold. Therefore, in order to ensure the service life and tear resistance of the silicone mold, these Air bubbles are eliminated, so you need to prepare a vacuum machine to completely eliminate air bubbles. If the DIY operation type does not have a vacuum machine, you can use hair dryers, sharp tools, and defoamers, but you can't completely remove the bubbles.

4. When the liquid mold silicone rubber is unsealed and taken out for use, the entire barrel of mold silicone should be reloaded from top to bottom and stirred evenly to avoid precipitation, and the remaining mold silicone rubber should be sealed and packaged after the amount is taken out before it can be used next time.

5. When vulcanization molding needs to be heated and vulcanized, an oven must be prepared for heating. Water-proof steam heating cannot be used, because the addition molding silicone rubber cannot be in contact with water, otherwise it will not be vulcanized.